Hi, sorry to hear things arent right with Kiki. I agree... pets dont show signs of weakness or seek your comfort continually unless something is not right in my experience. At 11 years old I would want to run some blood work and possibly take some xrays. The blood work would determine if there were any raised liver enzymes or kidney enzymes and would rule out anemia. I mention anemia because splenic tumors are very common in older sheperds and this is why i would also recommend xrays of the abdomen. There may of course be absolutely nothing medically wrong but because you are concerned about her and you have noticed early it may be best to get things checked out before they possibly get worse. Hope that reassures you that you should get her checked by a vet, at least for peace of mind. Best of luck with her...